This is the MAME 0.185 CHD (Merged) Collection. This contains all items from A-G and H-Z as a pair of large .ZIP files.
With more modern games needing so much data, hard disks or CD's were used to store the data. MAME supports these files in the form of CHD (Compressed Hunks of Data) files. Games that require CHD files need both a rom zip file and a CHD file which is stored separately to roms.
MAME (an acronym of Multiple Arcade Machine Emulator) is a free and open source emulator designed to recreate the hardware of arcade game systems in software on modern personal computers and other platforms. The intention is to preserve gaming history by preventing vintage games from being lost or forgotten. The aim of MAME is to be a reference to the inner workings of the emulated arcade machines; the ability to actually play the games is considered "a nice side effect". Joystiq has listed MAME as an application that every gamer should have.
September 18, 2017 Subject:
The torrent for this item will include both the "a-g" and "h-z" portions as of the next hour or so.
(When the "h-z" portion was added to the item, the torrent stopped being updated automatically because the total item size was greater than our default limit for making torrents, but an admin can override that limit by explicitly submitting a task to rebuild the torrent.)
Our apologies that this problem was unaddressed for so long. The best way to obtain a timely response when you encounter a problem with an item is to email email@example.com.
August 19, 2017 Subject:
Magnet Link for H-Z